Victimes de dénonciations faites à la Gestapo, des résistants belges sont arrêtés et internés dans un camp de prisonniers. Certains d'entre eux occupent la « baraque n° 1 ».
Lily is a lost girl who lived a miserable childhood. Now she works for Martial, a small-time crook. One day, she meets Armand, a shy high school student, the son of a renowned surgeon. And she discovers true love. But Martial is nothing of a tender heart, on the contrary. He manipulates Lily into forcing Armand to mimic the signature of his father, which will allow his gang to obtain drugs with a view to selling them...